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 The Product Formula for Nielsen Root Number Commun. Korean Math. Soc. 2000 Vol. 15, No. 2, 357-370 Ki-Yeol Yang Sunchon National University Abstract : In [6], Cheng-Ye You gave a condition equivalent to the Nielsen number product formula for fiber maps. And Jerzy Jezierski also gave a similar condition for coincidences of fiber maps. The main purpose of this paper is to find the condition for which holds the product formula for Nielsen root numbers $N(f;a) = N(\bar f;\bar a) N(f_b ;a)$. Keywords : Nielsen root number, root Reidemeister class, transformation, product formula MSC numbers : 55M20 Downloads: Full-text PDF

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